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Spotmatic
Joined: 18 Aug 2008 Posts: 4045 Location: Netherlands
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Posted: Sun Dec 21, 2008 10:12 pm Post subject: I repaired my first lens today... |
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Spotmatic wrote:
Maybe nothing important, but a few weeks ago I got this nice Meyer Primotar 180mm f/3.5 lens for next to nothing (to me at least) -- 10 euros. It came to me in this shape, including the Meyer lens case and both original lens covers:
So what was wrong with it? Basically, the diaphragm was stuck. It would not move at all. The former owner tried to use a little too much force, with this as a result:
So I disassembled the front group, and that was very, very easy to do. No screws had to be removed at all. When I reached the blades it was clear that they were sticking to each other, in such a way that they came out of the lens in one piece. I cleaned them in a bath of naphta, dried them and put them back into the lens.That actually was the hardest part, I had to try 3 times before I knew how to do it
I could understand why some prefer 6-blade diaphragms, from a repairer's point of view
And here is the result:
Not bad for 10 euros and a little work, eh? _________________ Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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piticu
Joined: 04 Aug 2008 Posts: 591 Location: Romania
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Posted: Sun Dec 21, 2008 10:16 pm Post subject: |
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piticu wrote:
Great job! I've almost cried when i tried to put back a 5 blades iris _________________ www.atelierelealbe.eu |
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Attila
Joined: 24 Feb 2007 Posts: 57865 Location: Hungary
Expire: 2025-11-18
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Posted: Sun Dec 21, 2008 10:19 pm Post subject: |
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Attila wrote:
Great job! Nice to see you saved this poor guy life! _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Jesito
Joined: 24 Aug 2007 Posts: 5745 Location: Olivella, Catalonia, (Spain)
Expire: 2015-01-07
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Posted: Sun Dec 21, 2008 10:42 pm Post subject: |
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Jesito wrote:
Congrats, nice job done!.
And thanks for sharing,
Jes. _________________ Jesito, Moderator
Jesito's backsack:
Zooms Sigma 70-300, Tamron 35-135 and 70-210 short, 70-210 long, 28-70 CF Macro, 35-70, 35-80, Vivitar 70-210 KA, Tamron 70-250.
Fixed Industar-50, , Tamron 24mm, Tamron 135mm, Sands Hunter 135mm, Pancolar 50mm, Volna-3, many Exakta lenses
DSLR SIGMA SD9 & SD14, EOS 5D, Sony A700 and NEXF3, Oly E-330, E-400, E-450, E-1
TLR/6x6/645 YashicaMat, Petri 6x45, Nettar, Franka Solida, Brilliant
SLR Minolta X300, Fuji STX II, Praktica VLC3, Pentax P30t, EXA500, EXA 1A, Spotmatic(2), Chinon CM-4S, Ricoh, Contax, Konica TC-X , Minolta 5000, 7000i, 3Sxi, EOS 500 and CX
Rangefinders Chinon 35EE, Konica C35 auto, Canonet 28, Yashica Lynx, FED-2, Yashica electro 35, Argus C3 & C4, Regula Cita III, Voigtlander Vitoret (many), Welta Welti-I, Kodak Signette 35, Zorki-4, Bessa-R & L, Minolta Weathermatic, olympus XA2
Compact Film Konica C35V, Voigtlander Vitorets, Canon Prima Super 105, Olympus XA2 and XA3
Compact Digital Olympus C-5050, Aiptek Slim 3000, Canon Powershot A540, Nikon 5200, SIGMA DP1s, Polaroid X530, IXUS55, Kodak 6490, Powershot G9 and G10
CSCCanon EOS-M, Samsung NX100 and NX210, Lumix G5, NEX-F3 |
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Farside
Joined: 01 Sep 2007 Posts: 6557 Location: Ireland
Expire: 2013-12-27
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Posted: Sun Dec 21, 2008 11:48 pm Post subject: |
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Farside wrote:
Excellent work. I'm good at taking them apart. _________________ Dave - Moderator
Camera Fiend and Biograph Operator
If I wanted soot and whitewash I'd be a chimney sweep and house painter.
The Lenses of Farside (click)
BUY FRESH FOMAPAN TO HELP KEEP THE FACTORY ALIVE ---
Foma Campaign topic -
http://forum.mflenses.com/foma-campaign-t55443.html
FOMAPAN on forum -
http://www.mflenses.com/fs.php?sw=Fomapan
Webshop Norway
http://www.fomafoto.com/
Webshop Czech
https://fomaobchod.cz/inshop/scripts/shop.aspx?action=DoChangeLanguage&LangID=4 |
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indianadinos
Joined: 06 Jul 2008 Posts: 1310 Location: Toulouse, France
Expire: 2011-12-05
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Posted: Mon Dec 22, 2008 1:27 am Post subject: |
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indianadinos wrote:
Hello,
Really nice work ...
Now, what about posting some sample pictures ?
Best regards _________________ Please visit my blogs Shooting with a Pentax K10D / FF Visions
Takumar: 24/3.5, 28/3.5, 35/2, 35/3.5, 50/1.4, 55/1.8, 85/1.8, 105/2.8, 120/2.8, 135/3.5, 150/4, 200/4
Pentax-K: M28/2.8, K28/3.5, M50/1.4, A50/1.7, M50/4 Macro, K85/1.8, K105/2.8, K135/2.5, M200/4, M70-150/4
Zeiss: Flektogon 20/2.8, 20/4, 35/2.4, 35/2.8, Tessar 50/2.8, Pancolar 50/1.8, Biotar 58/2, Sonnar 135/3.5, Sonnar 180/2.8
Meyer: Primagon 35/4.5, Domiplan 50/2.8, Oreston 50/1.8, Primoplan 58/1.9, Trioplan 100/2.8, Orestor 100/2.8, Orestor 135/2.8
Schacht/Steinheil: Travenar 90/2.8, Travenon 135/4.5, Quinar 135/2.8, Quinar 135/3.5
Russian: MIR 37B, Industar 50/3.5, Helios 44M & 44M-2, Jupiter 37A
P6: Flektogon 50/4, Biometar 80/2.8, Orestor 300/4
Nikkor: Nikkor-O 35/2, Micro 55/3.5, Nikkor-S 50/1.4, Nikkor-Q 135/2.8
Fuji: EBC 28/3.5, EBC 55/3.5 Macro, EBC 135/2.5
Misc Lenses: Kiron 105/2.8 Macro, Tamron SP90/2.5
... and a few other Vivitar, Tamron, Sigma and Soligor lenses ...
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Spotmatic
Joined: 18 Aug 2008 Posts: 4045 Location: Netherlands
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Posted: Mon Dec 22, 2008 7:44 am Post subject: |
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Spotmatic wrote:
Thanks everyone! It certainly is very rewarding to repair a defective lens - no matter how cheap or how expensive it is. Of course, I repaired it to try it out, and that will happen soon. Check back in a few days _________________ Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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peterqd
Joined: 28 Feb 2007 Posts: 7448 Location: near High Wycombe, UK
Expire: 2014-01-04
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Posted: Mon Dec 22, 2008 10:11 am Post subject: |
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peterqd wrote:
It's really easy and all goes well until.. you discover you have to lift up the first blade you laid to slide one underneath! Wow, I've never tried one as complex as this - I'm lost in admiration of your patience! _________________ Peter - Moderator |
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koji
Joined: 21 Jul 2008 Posts: 2106 Location: Hiroshima, Japan
Expire: 2012-12-27
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Posted: Mon Dec 22, 2008 10:08 pm Post subject: |
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koji wrote:
Spotmatic wrote: |
...! It certainly is very rewarding to repair a defective lens - no matter how cheap or how expensive it is. ... |
I totally (means 120%) agree with this statement. _________________ Our Home Page has 18,200 photos in 575 directories today.
Lenses: https://www.pbase.com/kkawakami/top_level_my_lenses |
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woodrim
Joined: 14 Jan 2010 Posts: 4060 Location: Charleston
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Posted: Sun Aug 21, 2016 6:15 pm Post subject: |
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woodrim wrote:
Hello Peter: Old post, but right subject. You said "No screws had to be removed at all". I've tried unscrewing the front, but didn't want to force without knowing more. Can you please tell me how exactly to remove the front? I have one blade that just went out of position. Looking, it appears an easy slip back into position if I can access from the front.
Thanks much. _________________ Regards,
Woodrim |
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konicamera
Joined: 03 May 2009 Posts: 746 Location: Warsaw, Poland
Expire: 2014-06-14
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Posted: Sun Aug 21, 2016 7:23 pm Post subject: |
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konicamera wrote:
woodrim wrote: |
Hello Peter: Old post, but right subject. You said "No screws had to be removed at all". I've tried unscrewing the front, but didn't want to force without knowing more. Can you please tell me how exactly to remove the front? I have one blade that just went out of position. Looking, it appears an easy slip back into position if I can access from the front.
Thanks much. |
+1
I would also love to see how you accessed the aperture blades. I have two lenses from this maker - this Primotar 180mm and the 300 Telemegor - and their apertures are in the same condition yours was in. There must be some design flaw there, for I've seen many older MOG lenses wth this condition. _________________
L'homme s'ennuie du bien, cherche le mieux, trouve le mal, et s'y soummet, crainte du pire. - Duc François-Gaston de Lévis
While it is nice to be important, it's more important to be nice.
URL: www.konicafiles.com
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woodrim
Joined: 14 Jan 2010 Posts: 4060 Location: Charleston
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Posted: Sun Aug 21, 2016 9:03 pm Post subject: |
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woodrim wrote:
Just found my way through it. The front most ring does unscrew. The lens needs a little more effort and has those opposing notches for a tool. Once inside I was able to reposition the renegade blade, but seems maybe slightly bent. Testing it revealed that it will come out again if turned past f/5.6. My cure was to set the perture stop at f/5.6 and never go beyond. I use it mostly at wide open anyway. _________________ Regards,
Woodrim |
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